CN212550030U - Novel flue gas flow equalizing device of electric dust collector - Google Patents
Novel flue gas flow equalizing device of electric dust collector Download PDFInfo
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- CN212550030U CN212550030U CN202020598263.8U CN202020598263U CN212550030U CN 212550030 U CN212550030 U CN 212550030U CN 202020598263 U CN202020598263 U CN 202020598263U CN 212550030 U CN212550030 U CN 212550030U
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Abstract
The utility model discloses a novel electrostatic precipitator flue gas flow straightener belongs to electric power industry atmosphere environmental protection technology field, mainly is applied to coal fired power plant flue gas dust pelletizing system, installs in electrostatic precipitator import expansion section horn mouth position, novel electrostatic precipitator flue gas flow straightener comprises three-layer equipartition board and two sets of equipartition board rearmounted water conservancy diversion grid, and this device can optimize the inside flow field distribution of dust remover, and the effectual speed distribution homogeneity that improves the flue gas entering dust remover anode plate region improves the whole dust removal effect of dust remover system.
Description
Technical Field
The utility model relates to an electric power industry atmosphere environmental protection flue gas dust removal technical field, concretely relates to install in electrostatic precipitator import expansion section horn mouth, can improve the inside flow field distribution homogeneity of electrostatic precipitator, the effectual speed distribution homogeneity that improves the flue gas entering dust remover anode plate region improves the device of the whole dust removal effect of dust remover system.
Background
At present, the national standard for the emission of flue gas from coal-fired power plants is more and more strict, and compared with other dust removal equipment, the electrostatic dust remover comprises the following components: the method has the advantages of low energy consumption, high dust removal efficiency, suitability for removing 0.01-50 mu m dust in the flue gas, high flue gas temperature and high pressure, larger treated flue gas amount, more economic investment and operation cost of using an electrostatic dust collector and the like, and becomes a flue gas dust removal technology widely adopted by coal-fired units of domestic thermal power plants.
The working principle of the electrostatic dust collector is that a high-voltage electric field is utilized to ionize smoke, dust charges in air flow are separated from the air flow under the action of the electric field, when dust-containing gas passes through the high-voltage electrostatic field, the dust is electrically separated, and dust particles and negative ions are combined to be charged negatively and then tend to discharge on the surface of an anode to deposit. From the dust removal process of the electrostatic precipitator, the uniformity of the uniform distribution of the flue gas flow field inside the electrostatic precipitator is an important factor directly influencing the dust removal efficiency of the electrostatic precipitator. When flue gas airflow inside the dust collector is unevenly distributed, the dust collection rate is high at a place with low airflow speed, the dust collection rate is low at a place with high airflow speed, the increased dust collection amount at the place with low airflow speed is smaller than the reduced dust collection amount at a place with high airflow speed, the total dust collection efficiency is reduced, and the scouring phenomenon can occur at a place with high airflow speed, so that a large amount of dust deposited on the dust collection plate is lifted again.
Therefore, the flue gas flow equalizing device with strong reliability and simple structure is provided for the dust removal system of the electric dust remover, and the dust removal efficiency of the whole electrostatic dust remover system is improved by optimizing the distribution uniformity of the flue gas flow field in the dust remover, so that the technical problem to be solved by technical personnel in the field is solved urgently.
Disclosure of Invention
An object of the utility model is to provide a be applied to electrostatic precipitator's flue gas flow straightener, its simple structure is reasonable reliable, and the device can effectual improvement electrostatic precipitator's inside flow field distribution homogeneity, adjusts the flue gas distribution, makes flue gas velocity distribution homogenization, improves the whole dust collection efficiency of electrostatic precipitator system.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the utility model provides a novel electrostatic precipitator flue gas flow straightener, electrostatic precipitator flue gas flow straightener comprises three-layer equipartition board and two sets of rearmounted rectification grid, three-layer equipartition board arranges in proper order in electrostatic precipitator import expansion section bell mouth along flue gas flow direction, first set of rearmounted water conservancy diversion grid is put and is placed in first layer equipartition board low reaches position, second group rearmounted water conservancy diversion grid is placed in second layer equipartition board low reaches position, rearmounted water conservancy diversion grid of first group equipartition board comprises vertical guide plate and horizontal guide plate, second group equipartition board rearmounted water conservancy diversion grid comprises vertical guide plate and horizontal guide plate.
Preferably, the three-layer equipartition board is all installed in the electrostatic precipitator import expansion section loudspeaker that the overall length is L, first layer equipartition board is installed apart from the electrostatic precipitator import expansion section loudspeaker mouth entry 2/5L position, the second layer equipartition board is installed in first layer equipartition board low reaches 2/5L position, the third layer equipartition board is installed in second layer equipartition board low reaches 1/10L position.
Preferably, the aperture ratio of the first layer of uniform distribution plate is 30%, the aperture ratio of the second layer of uniform distribution plate is 30%, and the aperture ratio of the third layer of uniform distribution plate is 35%.
Preferably, the first group of rear rectifying grids are arranged at the position 150mm downstream of the first group of uniform distribution plates, the size range of the horizontal section direction of the first group of rear rectifying grids is 300mm to 350mm, the first group of flow guiding grids consists of 16 horizontal flow guiding plates and 12 vertical flow guiding plates, the 16 horizontal flow guiding plates are divided into 8 upper half-zone horizontal flow guiding plates and 8 lower half-zone horizontal flow guiding plates by taking the central horizontal section of the bell mouth of the expansion section as a boundary, the deflection angle range of the 8 upper half-zone horizontal flow guiding plates and the central horizontal section of the bell mouth of the expansion section is 16 degrees to 20 degrees, the deflection angle range of the 8 lower half-zone horizontal flow guiding plates and the central horizontal section of the bell mouth of the expansion section is-16 degrees to-20 degrees, the 12 vertical flow guiding plates are divided into 6 left half-zone vertical flow guiding plates and 6 right half-zone vertical flow guiding plates by taking the central vertical section of the, the deflection angle range of the 6 left half-area vertical guide plates and the central vertical section of the flared opening of the expansion section is-10 degrees to-15 degrees, and the deflection angle range of the 6 right half-area vertical guide plates and the central vertical section of the flared opening of the expansion section is 10 degrees to 15 degrees.
Preferably, the second group of rear-mounted rectifying grids are arranged at the position 150mm downstream of the second group of uniform distribution plates, the size range of the horizontal section direction of the second group of rear-mounted rectifying grids is 280mm to 300mm, the first group of flow guiding grids consists of 24 horizontal flow guiding plates and 18 vertical flow guiding plates, the 24 horizontal flow guiding plates are divided into 12 upper half-zone horizontal flow guiding plates and 12 lower half-zone horizontal flow guiding plates by taking the central horizontal section of the bell mouth of the expansion section as a boundary, the deflection angle range of the 12 upper half-zone horizontal flow guiding plates and the central horizontal section of the bell mouth of the expansion section is 16 degrees to 20 degrees, the deflection angle range of the 12 lower half-zone horizontal flow guiding plates and the central horizontal section of the bell mouth of the expansion section is-16 degrees to-20 degrees, the 18 vertical flow guiding plates are divided into 9 left half-zone vertical flow guiding plates and 9 right half-zone vertical flow guiding plates by taking the central, the deflection angle range of the 9 left half-area vertical guide plates and the central vertical section of the flared opening of the expansion section is 10 degrees to 15 degrees, and the deflection angle range of the 9 right half-area vertical guide plates and the central vertical section of the flared opening of the expansion section is-10 degrees to-15 degrees.
Compared with the prior art, the utility model has the advantages of as follows:
1. the structure is simple and reliable;
2. the generated system resistance is small;
3. effectively improves the distribution uniformity of the flue gas flow field in the dust remover and improves the dust removal efficiency of the dust remover.
Drawings
FIG. 1 is a schematic view of the installation position of a novel flue gas flow equalizer of an electric dust collector of the present invention;
fig. 2 is a schematic structural view of a rear rectification grid of a first group of uniform distribution plates of a novel flue gas flow equalizing device of an electric dust collector of the present invention;
fig. 3 is a schematic structural view of a second group of rear-mounted rectifying grids of a uniform distribution plate of a novel flue gas flow equalizing device of an electric dust collector.
In the figure: 1. a bell mouth at an inlet expanding section of the electrostatic dust collector, 2 a first layer of uniform distribution plates, 3 a second layer of uniform distribution plates, 4 a third layer of uniform distribution plates, 5 a rectifying grid arranged behind a first group of uniform distribution plates, 51 a rectifying grid horizontal guide plate arranged behind the first group of uniform distribution plates, 511 a rectifying grid upper half area horizontal guide plate arranged behind the first group of uniform distribution plates, 512 a rectifying grid lower half area horizontal guide plate arranged behind the first group of uniform distribution plates, 52 a rectifying grid vertical guide plate arranged behind the first group of uniform distribution plates, 521 a rectifying grid left half area water vertical guide plate arranged behind the first group of uniform distribution plates, 522 a rectifying grid right half area vertical guide plate arranged behind the first group of uniform distribution plates, 6 a rectifying grid arranged behind the second group of uniform distribution plates, 61 a rectifying grid horizontal guide plate arranged behind the second group of uniform distribution plates, 611 a rectifying grid upper half area horizontal guide plate arranged behind the second group of uniform distribution plates, 612. the lower half area of the rectifying grid is horizontally provided with a flow guide plate 62 behind the second group of uniform distribution plates, the rectifying grid is vertically provided with a flow guide plate 621 behind the second group of uniform distribution plates, the left half area of the rectifying grid is horizontally provided with a vertical flow guide plate 622 behind the second group of uniform distribution plates, and the right half area of the rectifying grid is vertically provided with a flow guide plate behind the second group of uniform distribution plates.
Detailed Description
The invention is described in further detail below with reference to the following figures and examples:
the positional relationships described in the present invention, such as "upper", "lower", "left", "right", "center", "horizontal", "top", are positional relationships based on the orientation shown in the drawings, and are merely for convenience of description and to simplify the description, not the specific orientation that the indicating device or apparatus must have, and therefore should not be construed as limiting the present invention.
An object of the utility model is to provide a be applied to electrostatic precipitator's flue gas flow straightener, its simple structure is reasonable reliable, and the device can effectual improvement electrostatic precipitator's inside flow field distribution homogeneity, adjusts the flue gas distribution, makes flue gas velocity distribution homogenization, improves the whole dust collection efficiency of electrostatic precipitator system.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
as shown in fig. 1: the utility model provides a novel electrostatic precipitator flue gas flow straightener, electrostatic precipitator flue gas flow straightener is by first layer equipartition board 2, second floor equipartition board 3, third layer equipartition board 4 and first set of rearmounted rectification grid 5, the rearmounted rectification grid 6 of second floor constitute, the three-layer equipartition board is evenly arranged in electrostatic precipitator import expansion section horn mouth 1 along flue gas flow direction, first set of rearmounted water conservancy diversion grid 5 is placed in the low reaches position that is close to first layer equipartition board 2, the second is organized rearmounted water conservancy diversion grid 6 and is placed in the low reaches position that is close to second floor equipartition board 3.
Preferably, three-layer equipartition board is all installed in the electrostatic precipitator import expansion section bell mouth 1 that the overall length is L, first layer equipartition board 2 is installed apart from the 1 entry 2/5L position of electrostatic precipitator import expansion section bell mouth, second layer equipartition board 3 is installed in 2 low reaches 2/5L positions of first layer equipartition board, third layer equipartition board 4 is installed in 3 low reaches 1/10L positions of second layer equipartition board.
Preferably, the aperture ratio of the first layer of uniform distribution plate 2 is 30%, the aperture ratio of the second layer of uniform distribution plate 3 is 30%, and the aperture ratio of the third layer of uniform distribution plate 4 is 35%.
As shown in fig. 2: the guide grid 5 arranged behind the first group of uniform distribution plates consists of a horizontal guide plate 51 and a vertical guide plate 52.
Preferably, the first set of rear rectifying grids 5 is installed at the position 150mm downstream of the first set of uniform distribution plates 2, the size range of the horizontal section direction of the first set of rear rectifying grids 5 is 300mm to 350mm, the first set of flow guiding grids 5 consists of 16 horizontal flow guiding plates 51 and 12 vertical flow guiding plates 52, the 16 horizontal flow guiding plates 51 are divided into 8 upper half horizontal flow guiding plates 511 and 8 lower half horizontal flow guiding plates 512 by taking the central horizontal section of the expansion section bell mouth 1 as a boundary, the deflection angle range of the 8 upper half horizontal flow guiding plates 511 and the central horizontal section of the expansion section bell mouth 1 is 16 degrees to 20 degrees, the deflection angle range of the 8 lower half horizontal flow guiding plates 512 and the central horizontal section of the expansion section bell mouth 1 is-16 degrees to-20 degrees, the 12 vertical flow guiding plates 52 are divided into 6 left half water vertical flow guiding plates 521 and 6 right half vertical flow guiding plates 522 by taking the central vertical section of the expansion section bell mouth 1 as a boundary, the deflection angle range of the 6 left half-area vertical deflectors 521 and the central vertical section of the expansion section bell mouth 1 is-10 degrees to-15 degrees, and the deflection angle range of the 6 right half-area vertical deflectors 522 and the central vertical section of the expansion section bell mouth 1 is 10 degrees to 15 degrees.
As shown in fig. 3: the flow guide grid 6 arranged behind the second group of uniform distribution plates consists of a horizontal flow guide plate 61 and a vertical flow guide plate 62.
Preferably, the second group of rear rectifying grids 6 is arranged at 150mm downstream of the second group of uniform distribution plates 3, the size range of the horizontal section direction of the second group of rear rectifying grids 6 is 280mm to 300mm, the second group of flow guiding grids 6 is composed of 24 horizontal flow guiding plates 61 and 18 vertical flow guiding plates 62, the 24 horizontal flow guiding plates 61 are divided into 12 upper half horizontal flow guiding plates 611 and 12 lower half horizontal flow guiding plates 612 by taking the central horizontal section of the expansion section bell mouth 1 as a boundary, the deflection angle range of the 12 upper half horizontal flow guiding plates 611 and the central horizontal section of the expansion section bell mouth 1 is 16 degrees to 20 degrees, the deflection angle range of the 12 lower half horizontal flow guiding plates 612 and the central horizontal section of the expansion section bell mouth 1 is-16 degrees to-20 degrees, and the 18 vertical flow guiding plates 62 are divided into 9 left half vertical flow guiding plates 621 and 9 right half vertical flow guiding plates 622 by taking the central vertical section of the expansion section bell mouth 1 as a boundary The deflection angle range of the 9 left half-area vertical guide plates 621 and the central vertical section of the expansion section bell mouth 1 is 10 degrees to 15 degrees, and the deflection angle range of the 9 right half-area vertical guide plates 622 and the central vertical section of the expansion section bell mouth 1 is-10 degrees to-15 degrees.
Claims (5)
1. The utility model provides a novel electrostatic precipitator flue gas flow straightener which characterized in that: the flue gas flow equalizing device of the electric dust collector comprises a first layer of uniform distribution plate, a rear rectifying grid of the first layer of uniform distribution plate, a rear rectifying grid of a second layer of uniform distribution plate, and a third layer of uniform distribution plate, wherein the first layer of uniform distribution plate, the second layer of uniform distribution plate and the third layer of uniform distribution plate are sequentially arranged in a flare opening of an inlet expansion section of the electrostatic dust collector along the flue gas flowing direction, the rear rectifying grid of the first layer of uniform distribution plate is arranged at the downstream position of the first layer of uniform distribution plate, the rear rectifying grid of the second layer of uniform distribution plate is arranged at the downstream position of the second layer of uniform distribution plate, the rear rectifying grid of the first layer of uniform distribution plate comprises a vertical guide plate and a horizontal guide plate, and the rear rectifying grid of the second layer of uniform distribution plate comprises a vertical guide plate and.
2. The novel flue gas flow equalizing device of the electric dust collector as claimed in claim 1, wherein: first layer equipartition board, second floor equipartition board, third layer equipartition board are installed in the electrostatic precipitator import expansion section bell mouth that overall length is L, first layer equipartition board is installed apart from the electrostatic precipitator import expansion section bell mouth entry 2/5L position, second floor equipartition board is installed in first layer equipartition board low reaches 2/5L position, third layer equipartition board is installed in second floor equipartition board low reaches 1/10L position.
3. The novel flue gas flow equalizing device of the electric dust collector as claimed in claim 1, wherein: the aperture ratio of the first layer of uniform distribution plate is 30%, the aperture ratio of the second layer of uniform distribution plate is 30%, and the aperture ratio of the third layer of uniform distribution plate is 35%.
4. The novel flue gas flow equalizing device of the electric dust collector as claimed in claim 1, wherein: the rear rectifying grid of the first layer of uniform distribution plate is arranged at the position 150mm downstream of the first layer of uniform distribution plate, the size range of the horizontal section direction of the rear rectifying grid of the first layer of uniform distribution plate is 300mm to 350mm, the rear rectifying grid of the first layer of uniform distribution plate is composed of 16 horizontal guide plates and 12 vertical guide plates, the 16 horizontal guide plates are divided into 8 upper half-area horizontal guide plates and 8 lower half-area horizontal guide plates by taking the central horizontal section of the bell mouth of the expansion section as a boundary, the deflection angle range of the 8 upper half-area horizontal guide plates and the central horizontal section of the bell mouth of the expansion section is 16 degrees to 20 degrees, the deflection angle range of the 8 lower half-area horizontal guide plates and the central horizontal section of the bell mouth of the expansion section is-16 degrees to-20 degrees, and the 12 vertical guide plates are divided into 6 left half-area vertical guide plates and 6 right half-area vertical guide plates by taking the central vertical section of the, the deflection angle range of the 6 left half-area vertical guide plates and the central vertical section of the flared opening of the expansion section is-10 degrees to-15 degrees, and the deflection angle range of the 6 right half-area vertical guide plates and the central vertical section of the flared opening of the expansion section is 10 degrees to 15 degrees.
5. The novel flue gas flow equalizing device of the electric dust collector as claimed in claim 1, wherein: the rear rectifying grid of the second layer of uniform distribution plate is arranged at the position 150mm downstream of the second layer of uniform distribution plate, the size range of the horizontal section direction of the rear rectifying grid of the second layer of uniform distribution plate is 280mm to 300mm, the rear rectifying grid of the second layer of uniform distribution plate is composed of 24 horizontal guide plates and 18 vertical guide plates, the 24 horizontal guide plates are divided into 12 upper half-zone horizontal guide plates and 12 lower half-zone horizontal guide plates by taking the central horizontal section of the bell mouth of the expansion section as a boundary, the deflection angle range of the 12 upper half-zone horizontal guide plates and the central horizontal section of the bell mouth of the expansion section is 16 degrees to 20 degrees, the deflection angle range of the 12 lower half-zone horizontal guide plates and the central horizontal section of the bell mouth of the expansion section is-16 degrees to-20 degrees, the 18 vertical guide plates are divided into 9 left half-zone vertical guide plates and 9 right half-zone vertical guide plates by taking the central vertical section of the bell mouth of the expansion section, the deflection angle range of the 9 left half-area vertical flow guide plates and the central vertical section of the flared opening of the expansion section is 10 degrees to 15 degrees, and the deflection angle range of the 9 right half-area vertical flow guide plates and the central vertical section of the flared opening of the expansion section is-10 degrees to-15 degrees.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020598263.8U CN212550030U (en) | 2020-04-21 | 2020-04-21 | Novel flue gas flow equalizing device of electric dust collector |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020598263.8U CN212550030U (en) | 2020-04-21 | 2020-04-21 | Novel flue gas flow equalizing device of electric dust collector |
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| CN212550030U true CN212550030U (en) | 2021-02-19 |
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| CN202020598263.8U Active CN212550030U (en) | 2020-04-21 | 2020-04-21 | Novel flue gas flow equalizing device of electric dust collector |
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